Apply to gold, silver, copper, steel, stone, shells and other fine polishing.

适用于金, 银, 铜, 钢, 石, 贝壳等精细抛光.

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Sugar, Urea, Coal, Copper, Steel Copper Products.

采购产品糖, 尿素, 煤, 铜, 钢.

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B . For coloring: jewelery, aluminium, brass, copper, steel, stainless steel, die casting, plastic, lacquer, wood.

抛光: 珠宝 、 铝 、 黄铜 、 铜 、 钢 、 不锈钢 、 压铸件, 塑胶漆面, 木头.

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BC 12 centuries, yunnan begins to collect copper, steel - making and cast bronze ware.

公元前12世纪, 云南开始采铜 、 炼钢和铸造铜器.

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In this project copper - steel friction - welds and car body's coated steel spot welds have been studied.

本课题的研究对象是铜 - 钢异种材料摩擦焊接头和汽车用镀锌钢板点焊接头.

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